I think it's a funny little app. I could see it being kind of useful for the author but I think I would personally have trouble using an app that I don't actually know what it's going to do 100%. I think that you could mitigate this a bit by putting the list of commands it corrects right at the top of the readme.
I think most of us have probably been at the point where we were typing something like "I hate you, you god damn computer!" into the terminal or text editor. I see this as a moderately elegant helper in those situations
'I could see it being kind of useful for the author...'
That was my impression. It reminded me of little custom scripts or functions I've created that help with my day to day work, things I wouldn't necessarily give to someone because they were built with myself in mind. I know how they work and exactly what they do.
I think most of us have probably been at the point where we were typing something like "I hate you, you god damn computer!" into the terminal or text editor. I see this as a moderately elegant helper in those situations